Using mSATA device on PogoPlug Pro

I have finally gotten around to trying to use the SATA to mSATA adapter on one of my PogoPlug Pros. I have been using this system with an eSATA drive successfully for over a year. I first used a USB to SATA adapter to connect the mSATA to SATA adapter with a SanDisk X300 MSATA 128GB SSD as /dev/sdb. I used fdisk to create the /dev/sdb1 partition and then formatted as ext3 with rootfs label and mounted as /media/usb0. I then ran rsync to sync the data from / to /media/usb0. To verify the copy I then removed the eSATA drive and booted again with the USB to SATA adapter. This boot was successful. I then disconnected the USB to SATA adapter and plugged the mSATA to SATA adapter directly to the SATA connector on the PogoPlug Pro. This resulted in the following issue:

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